The Qualcomm CDMA Digital Cellular System
نویسنده
چکیده
The original impetus for CDMA's development was the enormous popularity of existing narrow band analog FM cellular telephone systems. There is only so much radio spectrum available to deal with the flourishing demand for cellular service, and severe congestion already exists in several major service areas. A IS-95 system can carry about 10-15 times as many voice calls as an analog system in the same spectrum.
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تاریخ انتشار 1993